Rough rounding machines



Oct. 8, 1957 A. c. KULIK ROUGH aouuomc MACHINES 2 Sheets-Sheet 1 FiledJq'ly 18, 1955 Inventor Alphonse C Kidik Oct. 8, 1957 A. c. KULIK2,808,601

ROUGH aounnmc MACHINES Filed July 18, 1955 2 Sheets-Sheet 2 ROUGHROUNDING MACHINES Alphonse C. Kulik, Ipswich, Mass, assignor to UnitedShoe Machinery Corporation, Flemington, N. 3., a corporation of NewJersey Application July 18, 1955, Serial No. 522,589

13 Claims. (Cl. 1285) This invention relates to sole rounding machines,and is illustrated herein as embodied in an improved work rest andmounting therefor adapted for use in a machine of the type disclosed inUnited States Letters Patent No. 2,782,432, granted February 26, 1957upon my application Serial No. 480,842, filed on January 10, 1955.

Rough rounding machines of this type may be required to round sole edgesof a thickness varying from less than a quarter of an inch up to oneinch, or even more. A shoe being rounded is supported at the upper sideof the sole by a feed point and a crease guide, the feed point beingarranged to resist the thrust of a reciprocatory rounding cutter. Theshoe is yieldingly held against the feed point and crease guide by abottom rest which cooperates with the feed point to impart a feedingmovement to the work and, in addition, positions the shoe so that therounding cut is directed at the desired angle to the bottom of the sole.

If the bottom rest is set appropriately for a work piece of onethickness, a heavier Work piece cannot be as readily presented to themachine and may be gripped with an excessive pressure. Similarly, alighter work piece may not be gripped firmly enough to afford asatisfactory feeding action. Accordingly, with any appreciable change inthickness of the work, resetting of the bottom rest is required andordinarily, in prior machines of this type, for any such readjustment ofthe bottom rest a corresponding adjustment of the yielding means, fromwhich the gripping effect of the bottom rest is derived, is necessary toavoid a change in the feeding action of the machine.

With the foregoing in view, an object of the invention is to provide animproved bottom rest structure which can be readily adjusted either toaccommodate a wide range of sizes of work, or to vary the pressure withwhich the bottom rest bears against the shoe, and which does not requirereadjustment for either condition when a change in the other has beenmade.

To this end, and in accordance with one feature ofthe present invention,there is provided mechanism for controlling, the bottom rest of theillustrated machine includ ing, with means for urging the rest towardthe support which resists the thrust of the rounding cutter and meansfor determining the normal spacing of the rest from the support,operator controlled means for selectively operat-- ing each of saidabove mentioned means independently to vary the bearing pressure of therest against the shoe bottom and the normal spacing of the rest from thesupport.

More specifically, 'and in accordance with a further feature of theinvention, the above-mentioned mechanism includes, with an operatingmember which is movable in one direction to effect a change in thenormal spacing of e the bottom rest from the support, which member isalso,

mounted for yielding movement in another directionto cause the rest topress against the shoe bottom, operator controlled means for moving themember in the said 2,8 0,601 Patent ed Get. 8, 1957 one direction inorder to vary the normal spacing of the rest from the support, and asecond operator controlled means mounted for movement bodily with, andalso with respect to, the first-mentioned operator controlled means, forthe purpose of adjusting the resistance to the yielding movement of themember, and hencethe pressure with which the rest bears upon the shoebottom.

These and other features of the invention will now be described indetail in connection with the accompanying-drawings and will be pointedout in the appended claims.

In the drawings,

Fig. 1 is a side elevation of a portion of an illustrative machineembodying the invention; 7

Fig. 2 is asectional plan view of the structure shown in Fig. 1, certainparts having been broken away, and the section being taken along theline IIII of Fig. 1; and

Fig. 3 is an elevation of the bottom rest and its mounting as viewedobliquely from the right of the machine in the direction of the arrow inFig. 2.

A shoe to be operatedupon in the illustrated machine is presentedthereto with the upper surface of its welt, or the corresponding portionof the shoe if it is not a welt shoe, in engagement with and supportedby a crease guide 10 (Fig. 1) and a feed point 12, these members beingarranged to guide the shoe and support it against the thrust of areciprocatory chopping knife 14. The. position of the rounding cut andhence the width of the sole edge extension, is determined in the shankof the shoe bythe crease guide 10 and in the forepart portion of theshoe by a forepart gage 16, as is well understood in this art, and asdisclosed in the patent referred to above, to which reference may bemade for a complete description and disclosure of the construction andoperation of the parts referred to thus far.

The shoe is yieldingly held against the crease guide 10 and feed point12 by a bottom rest 18 and an auxiliary rest 20 which insure that theshoe, with its bottom seated upon both rests, will be presented to theknife at the proper angle thereto. The rest 18 is adjustably secured bya screw 22 to a carrier 24 which is mounted to swing toward and awayfrom the guide 10 and feed point 12, in order to accommodate work ofdifferent thicknesses, upon a stud 26 carried by a block 28. The blockhas an. arcuate portion, T-shaped in cross-section, which is concentricwith the upper edge of the rest 18 and is arranged to slide in acomplemental guideway formed in a support 30, so that the rest 18 isbrought into complete contact heightwise thereof, with the shoe bottomin response to pressure therebetween. A spring pressed ball 32, mountedin the block 28 and normally seated in a shallow recess in the support30, tends to hold the rest 18 in its normally erect position and toreturn the rest to this position if it is displaced to either sidethereof. The support 30 is fixed to a pair of rods 34, 34 which aremounted to slide horizontally in bosses 36 which protrude forwardly froma cover plate 37. This plate is fixed upon the frame 33 of the machineby screws 39. Horizontal reciprocatory motion is imparted to the support30 in timed relation to the oscillating movement of the feed point 12,as disclosed in United States Letters Patent No. 2,543,760 granted March6, 1951 upon an application of J. C. Cantley, whereby synchronizedfeeding move-- ments from right to left are imparted to the rest 18 andfeed point 12, and to a shoe being operated upon.

The auxiliary rest 26 is slotted to receive a screw 4%? (Fig. 3) bywhich it is mounted, for adjustment relatively to the rest 18 for thepurpose of establishing the desired angle of the rounding out withrespect to theshoe bottom, upon a carrier 42 which is mounted to on astud 44, the latter being fixed to the support 30.]

swing horizontally 1 i and the pressure which it exerts upon the shoe;bottom, by the following mechanism. An arm 52 (Fig, 2) fixed;

upon the carrier 24, is connected by a linlg 54 to the upper arm of abell crank 56 comprising ashaft 58 which is mounted to swing about avertical axis;upoqa brackpt SS.

The bracket is died to the frame 38,by the scgew s; 3g9at the left handside of the plate 37. The lower 11311 of this bell crank has pivotallymounted therepn a square block 60 which. is receivedina slot inafprwardly extending arm 62 which is fixedtotheupper. end of a shaf t 6 4,

rotatably, mounted upon a, bracket 65, the latter being fixed o he a 8po the ewe end-0. thes ft 64 there 'isfised. a gear segment 68in meshwith aworm;

70 which. isfmounted for rotation. and. yielding sliding movementaxially, thereof upona tubular shaft 72. R tation of the worm withrespect to. the shaft 72 is prevented bya spline or key 74 whichfitsfreely in a-grooye in the worm, so as topermit thesliding;moverrusntinf-the1 latter upon the shaft.

The worm is normally biased into engagement with a, bearing 76 for theleft hand end of the shaft 72by a spring 78, the latter being compressedbetween theworm. and a cap or abutment 80 which ismounted upon the,

shaft 72 for adjustment lengthwise thereof to vary thestrain in thespring. a bearing 82 which, like the bearing 76, is integralwith thebracket 66. The abutment 80 is adjusted by turning a rod'84 which isrotatably mounted within and coaxially. of the shaft 72, the right handend of the rod having, formed thereon a screw 86, which is threadedintothe. abutment 80. The abutment is preventedfrom turning on the shaft 72by a pair of pins 88, as whichare'fixed to the abutment and slide withingrooves 90 formed oppositely to each other in the shaft 72 and extendinglength-.

wise thereof.

It will now be evident that when the worm 70 .is seated upon the bearing76, inresponse to the pressure of the; spring 78, the rest 18, throughthe connections between; the worm and the carrier 24, will be yieldinglyheldin; a predetermined-position withrespect to or atianormall spacingfrom the guide and feed point 12.

In orderto vary the normalposition of the rest 18, in

shaft 72 by means of a screw 94 which is threaded into the hand Wheeland bears againsta shoulder formed on,

the shaft.

The rod 84 is turned to adjust the spring 78, andhence to vary thepressure with which the rest 18 bearsagainst the shoe bottom, byrotating an arm 96 which is pinned to the left hand endofthe rod 84. Thearm is releasably held in adjusted position by a spring pressed detent98 which is arranged to enter any one of a series of holes 100. formedin the hand wheel 92.

A furtherprovisionfor varying the. yielding action, of,

. 65 S2 in such aposition as to receive the left-hand'end of the rest;If a light or delicate yielding action of the rest;

the rest 18 .is afforded by a'notch 101 formed in the arm 1?;is desiredit may be set, utilizing a slotin the rest for the, screw- 22, so'f-arforwardly of the arm 52' that the,

rest, when deflected,- does not engage the arm. This setting of the armis commonly employed when the sole material to be rounded is of ayielding nature, as in the case. of crepe rubber. In other instances,especially when the sole material is thin and rigid, it may be desirableto adjust/the rest 18 so that its left-hand end is seated The abutmentis freely received in against the notched portion of the arm 52', inwhich case the rest18 has a relatively stiff yielding action.

The rests 18 and 20 are retracted from their normal positions, tofacilitate presentation of a shoe to the machine, by the followingconnections. There is fixed to the carrier 42 for the auxiliary rest 20an arm 102 upon which is fixed a rod 104 carrying at its upper end ablock 106. This block is disposed in the path of movement of a plunger108 which is mounted to slide forwardly and rearwardly of the machine inthe frame 38 and is biased toward its rearward position by a spring 110.The rearward position of the plunger is determined by. an adjustablestop 112 which is threaded in the frame 38. The plunger is operated by abell crank 114 which is pivoted at 116 upon the frame 38 and. hasconnected thereto a rod 118 which is driven by a treadle (not shown). Bydepressing the treadle, the plunger 108 is moved forwardly and, throughthe above-described connections, causes the retraction of the rest 20,an equal retraction being impartedto the,rest18.by the. lug 50. which atthis. timebears against the. carrier 24-.

The, operation and use of the illustrative structure will now be,summarized. The. rest 18 is first adjusted forwardly and rearwardly of.the. machine to provide the desiredyielding-action, either light orstilt, and the rest 2 0;is, then adjusted so thatwhen the-shoe bottomiszseated upon both rests the sole edge; will be. trimmed at thedesiredangle with respect. to the bottom. The hand wheel M; is next turned inthe appropriate direction to cause thenormal spacing'of the rest 18 fromthe guide 10 and feed point 12 to be somewhat less than the thicknessofthe sole to be rounded. After the latter adjustment has been made, arelatively slightly depression of the, treadle willbe adequate toretract the rest 18- enough to facilitate the presentation of the shoeto the machine, with the guide 10 seated in the welt crease of the shoe,and the shoe bottom seatedupon the rests 18,, 20. Upon the release ofthe treadle, the rest 18-.is advanced into contact with,the shoebottqmbythe action of. the spring 78,- therenowbeinga small amountof clearancebetween the worm. 7 0.and the bearing76, this clearance corresponding tothe distance by. which the rest will'have been displaced rearwardly fromits'normal position by the work.

. accordance with the thickness of the work to be presented. tothemachine, the worm 70 is rotated. by turning a hand wheel 92 which islined upon the left hand end of the.

Suificient bearing pressure of the rest: 18 against the shoebottom toatford anelfective feedingv action is procured by. retracting thedetent98 away from the hand wheel 92 and turning the arm 96 to vary the strainof the spring 78 as desired.

As the arm 96 is mounted within, and for movement with, the hand wheel92 and shaft 72, it is, evident that the spacing of the rest 18. fromthe guide 10 and feed. point 12'can be varied at will without changingthe. strain of the spring 78, and hence without. affecting the pressurewith which the. rest 18 willbear against the shoe. bottom. Similarly,for any settingof the rest 18 the arm 7 96' may be turned to effect anadjustment of the strain, in the spring 78 and hence the pressure withwhich the rest- 18 bears against the .shoe bottom without affecting thesetting of the rest. 7

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

1. Ina rough rounding machine having a rounding. cutter, a support, abottom rest between which and said support a shoe tobe operated upon ispresented to said. cutter, mechanism forcontrolling said restcomprising. means for urging-it toward said support and'means fordetermining its normal spacing from said, support, and operatorcontrolled-means for selectively operating each of said above-mentionedmeansindependently to vary separately the bearing pressure ofsaid restagainst the shoe-bottom andthe normalspacing of said'rest fromsupport,;a bot om. rest betweenwhich andsaidsupport a shoe to be operatedupon is presented to said cutter, said rest being mounted for movementtoward and away from said support, mechanism for controlling said restcomprising yielding means for urging it toward said support and meansfor limiting movement of said rest toward said support, operatorcontrolled means for operating said last-mentioned means to vary thenormal spacing of said rest from said support, and a second operatorcontrolled means mounted for bodily movement with and also with respectto said first-mentioned operator controlled means for adjusting saidyielding means.

3. A rough rounding machine having a rounding cutter, a support, abottom rest between which and said support a shoe to be operated upon ispresented to said cutter, said rest being mounted for movement towardand away from said support, mechanism for controlling said restcomprising an operating member which is mounted for movement in onedirection to effect a change in the normal spacing of said rest fromsaid support, said member b.eing mounted for movement in anotherdirection in response to movement of said rest toward and away from saidsupport, yielding means for resisting movement of said member inresponse to movement of said rest away from said support, operatorcontrolled means for moving said member in said one direction to varythe normal spacing of said rest from said support, and a second operatorcontrolled means mounted within said first-mentioned operator controlledmeans for movement with and with respect thereto for adjusting saidyielding means.

4. In a rough rounding machine, a rounding cutter, a support againstwhich a shoe to be operated upon is presented to said cutter, a rest forholding the shoe against said support by engagement with the bottom ofthe shoe, said rest being mounted for movement toward and away from saidsupport, and mechanism for controlling said rest comprising a membermounted for movement in one direction in response to retractive movementof said rest from said support and in a second direction to vary thenormal spacing of said rest from said support, means for yieldinglyresisting movement of said member in said one direction whereby saidrest is biased against the shoe, and operator controlled means formoving said member in said second direction to adjust the normal spacingof said rest from said support.

5. In a rough rounding machine, a rounding cutter, a a

support against which a shoe to be operated upon is presented to saidcutter, a bottom rest mounted for movement toward and away from saidsupport, mechanism for controlling said rest comprising a member mountedfor rotative movement and for yielding sliding movement lengthwise ofits axis of rotation, operator controlled means for rotating said memberto adjust the normal spacing of said rest from said support, yieldingmeans for resisting sliding movement of said member in response toretractive movement of said rest from said support, and means foradjusting said yielding means whereby the bearing pressure of said restupon the shoe is varied.

6. In a rough rounding machine, a rounding cutter, a support againstwhich a shoe to be operated upon is presented to said cutter, a bottomrest mounted for movement toward and away from said support, mechanismfor controlling said bottom rest comprising a rotatable shaft, a membermounted upon said shaft to rotate therewith and to slide lengthwisethereof in response to retractive movement of said bottom rest from saidsupport, yielding means acting upon said member for resisting retractivemovement of said rest, and means carried by said shaft for adjustingsaid yielding means to vary the resistance of said member to theretractive movement of said rest.

7. In a rough rounding machine, a rounding cutter, a support againstwhich a shoe to be operated upon is presented to said cutter, a bottomrest mounted for movement toward and away from said support, mechanismfor controlling said bottom rest comprising a rotatable adjusting saidabutment lengthwise of said shaft thereby to vary the pressure of saidbottom rest against the shoe. 8. In a rough rounding machine having arounding cutter,.a. support against which a shoe to be operated uponispresented to said cutter, and a rest for holding the shoe against saidsupport by engagement with the bottom of the shoe, operator controlledmeans for retracting said rest from said support to facilitate insertionof a shoe therebetween, and mechanism for controlling said restcomprising a stop, a member mounted for yielding sliding movement awayfrom said stop in response to retractive movement of said rest, saidmember being rotatable to vary the normal spacing of said rest from saidsupport, and operator controlled means for rotating said member.

9. In a rough rounding machine having a rounding cutter, a supportagainst which a shoe to be operated upon is presented to said cutter anda bottom rest mounted for movement toward and away from said support,operator controlled means for retracting said rest from said support,and mechanism for urging said rest toward said support comprising gearedmembers one of which is mounted to slide and to rotate, a spring foryieldingly resisting sliding movement of said sliding and rotatingmember in one direction whereby the shoe is held against said support bysaid rest, a stop for limiting movement of said sliding and rotatingmember in response to the pressure of said spring thereagainst, andmeans for rotating said sliding and rotating member to adjust the normalspacing of said rest from said support.

10. In a rough rounding machine, a rounding cutter, a support againstwhich a shoe to be operated upon is presented to said cutter, a bottomrest mounted for movement toward and away from said support, means foradjusting said bottom rest comprising a worm and a geared member meshingwith said worm, a shaft upon which said worm is mounted to slide inresponse to movement of said rest away from said support, a stop forlimiting the sliding movement of said Worm in one direction, means foryieldingly holding said Worm against said stop whereby said rest isnormally held at a predetermined distance from said support, and meansfor rotating said shaft and worm to vary the normal spacing of said restfrom said support.

11. In a rough rounding machine having a rounding cutter and a supportagainst which a shoe to be operated upon is presented to said cutter, abottom re'st mounted for movement toward and away from said support,mechanism for positioning said bottom rest comprising a worm mounted toslide and rotate and a geared member meshing with said worm, means forrotating said worm to vary the normal position of said rest with respectto said support, a spring acting upon said Worm to bias said restagainst a shoe disposed between said rest and said support, and meansfor adjusting the strain of said spring to vary the pressure of saidrest against the shoe.

12. In a rough rounding machine having a rounding cutter and a supportagainst which a shoe to be operated upon is presented to the cutter, arest adapted to engage the shoe bottom and arranged to hold the shoeagainst said support, mechanism for adjusting said rest comprising arotatable shaft, a Worm splined to said shaft, con:

nections between said worm and said rest comprising a geared membermeshing with said worm, a spring acting upon said worm to cause saidrest to be biased against a shoe disposed between said rest and saidsupport, 'an abutment for said spring mounted for adjustment axially Qaid shaftto artdand away'imm s id xma m ans monn dhwithin said h.a t sinu t ng said abutm n hsz con o vary t e stain of sai sp in 'w theffifieqti hanositim: Qfsa L st wi m p t t Sa d t po t- 1 ,In a r u h.mnnding ma qhin af ound ng utt a upp r a a s which a' s e? 9 bat pa awdp n is pr.. s.eu ed to ai puma, a o -mm I I moun d f ow/smut tow rd andziay i omsa d upp to hold th S1195 .v hc a a n t by nga m n ith th s oebotto pe ato wntnq l d means f e acting s i w s ro laid supp Ins am orbias ng aid t toward said upp rtv cqmpx si g av z x dl g arad member m sing wi h a man, a ro a le haft 2 1 0 -whiqh $aid mm s P in d to move hqnaxial y t exeq a 1 n sz posa betwesm s id p vand ai q m nd xqdnota a lym un e i hin s id sha t-an thmad -int said aga n th sh d b f m .is riRefmmcs fil i the :fi of thi pa UNITED STATES PATENTS 839,896 Smallet' 1. Ian. 1, 1907 2,693,608 Baker Nov. 9, 1954

